Glass-tank furnace.



PATENTED FEB` 6, 1906.

3'.' PREG'E.

GLASS TANK. FURNE..

Inventor:

M wmnmu wl N XMIM m4 yNo. 811,952.

J. PROEGER.

GLASS TANK FURNACB.'

APPLIUATION Hun JAN. ze. 1904.

PATENTED PEB. 6, 1906.

5 BHEETB--BHEET 2.

Wifnesses y. W. a.

N0. 811,952. PATENTED PEB. e, 196e.

5. PRGER.

GLASS TANK FURNACE. APPLICATION rural) JAN..'u.19o4.

5 SHEETS-BRETT 3.

'PATENTED FEB. 6, 1906. PRGEGER. GLASS TNK FURNACE.

APPLIOATION FILED MM. za. 19041 5 SHBBTEHSHEBT 4,

Witnesses:

MEW?, www -l No, 311mm IATENTBD FEB. 6, 190e. .PRGBGER.

GLASS TANK PURNACE.

.APPLICATION FILED JAN. 2Bv 190K" 5 SHEETS-SHEET I y l m l l attainsenuncian, or GREENSBURG, PENNSYLVANIA.

` etenswaren menace.

peccation of Letters Patent. Patented Feb. 6, 1906.

Application iled January 28. 1904. Serial 110.190,949. y l" NJ "mh/mn,if :ur/nig concern: e it ltnow'n that l., lutins PROEGER, of

burg, in county oi5 Westmoreland,

ci Pennsylvania, have invented a n(l uf ai i (l useful improvement inGlassurnaces, oi which the following is a enact description, referencehan to the accompanying drawings, ung part oi this sijieciiication, inWhichto lligure'i is vertical sectional view. Fig. einen tal sectionalView on the line 2 2 is a detached view of the -iolls, showing `thedrawing-tank in section. Fig. e is an elevation of the i apparatus,showing the rolls and a the tenir in vertical section. Fig.

ical sectional view of a' modification i the' molten ,glass is deliveredfrom ry-tanh directly to almold or other if. o is a vertical sectionalicaticn in which the glass is n to a gathering-trough, which may c cilas a drawing-tank. Fig.. 7 is a un il sectional view of the same, thedis-l lnentepipe sing shown at the other l the i'urnaee; and Fig". 8 isa vertical partition, these passages being shown by dotted lines. Thusthe molten glass may How freely from one chamber to the other. The l airand` gas flues 5 and 6 operi into the upper portion of themelting-chamber 3, and this chamber 3 communicates with 4 by a `flue orpassage Q'above the normal level of the molten glass in the furnace. Thechamber 2 does not communicate at its up- `er part With ei her thechamber 3 or 4, but is `heated by the surrounding flue l0. Above thechamber 2 is a cover 11, having a fluidpressure passage 12, 'providedwith a valve 13, which valve has an operating-lever 14 and ports 15,Which communicate with the passageleadinfr into the chamber 2 and with apassage 16, ending to a supply of su erheated steam or otherfluid-pressure. T is a so rovided with which the passage 12 municationwith the from the chamber 4 at y Y nal level of the molten glass is adeliverypassage 18, which leadsinto the drawingtank 19, situated on alower level than the bottom 'of the chambers or tanks 2, 3, and 4.

. i, iig.

may be brought in comatmosphere. p

` i 'view ci the saine on the line 8 8 of At` the bottom of thedelivery-passage 18 is a urate 20, bymeans Vof which communicationsyxfnbola ci reference `indicate, like between the passa e 18 and thetank 19 may 'icreif'er f occur. be .n cned and lc osed. Extending downfs to an improvement in Wand y in the tank 19 and .longitudinally y l jand it consists in a fur om one end to the other ofthe same are two tmei ting; or heating chamber in W1ngs21 21, which extend. nearly to thebot- Tith a displacement chamber it into three cumvery chamber orpassage and in departrnents or chambers communicating with vita nailingthe glass from the melting each other at the bottom. This drawingo it lechamber toot' through the delivtank 19 is 'covered by an air-tight cover22,

onsists in a draWine-chamber and evi 'i s for drawing the glass, whichchamber iray be a part of the said to which the wings 21 may beattached.

assing through the cover 22 and leading iuto one of the outercompartments of the tank 19 is a fluid-pressure passage 23Which i sconnected With a suitable `source of supply of iuidpressure. Surroumlingthe` drawingL tank 19 are heating-fines24,` the purpose of which is tokeep the glass in the drawing-tank at the roper temperature and toprevent the coo ing of the same. Loading from thc vflue 24 to the upperportion ol' the cham ber 4 are ilues 25, which ilues pass. through theWalls of the 'furnace on both .sides ofthe demy invention, so that lnew' describe art may manufacture slrilletl in the ,3, and fii haveshown my rnace having a melting- .ceine11t-eh.amber 2, and a which areheated by ilues 5 and 6 or by whereby the batch yuned in a moltenchambers are separated by ,yiai't.itio`n-walls 7, and e with cach otherby means at the lower portion oi' the At the tvfor ends of tin(iran/inganni( 1 9 are heatingchambers 2G. The purpose ol' these luesand heating-chamb -.rs, as ali'eudystatcfl, is to keep the glass in thepassage 18 audrtanl: 19 in .fluid condition. v

ports 17 by means ofV livery-passage 18`and serve to heat the same.

the chamber IOO llO

Mounted in the cover 22 ofthe tank 19 are the ressinU-rolls 27 ,betweenwhich the plate oi g ass is drawn from the glass in the tank 19. Theserolls are mounted in the movable housings 28 29, (shown in Figs. 1 and4,) which housings are pivoted to the cover 22 and are sup orted by thedouble yokes 30 at each end of t e rolls. In theV cover 22, between thehousin s 28 and 29, is a longitudinal slot 31, throu which the glass isdrawn up between the ro 1s 27, the rolls serving to press the lass tothe desired thickness and also to ai by their rotation in drawing theglass from the tank 19. A

Althouigh VI `may employ .any bait or4 other suitable evice indrawingthe glass from the .tank 19, I preferto'use the apparatus shown v in Fis. 1 and'4 of thefdrawings.v This drawing evice consists of atwo-partmold 32, o which moldis o f equal-length with the slot 31 andthe arts of which are pivotedto' each other. he cavity of this mold isdovetailed in shaperand open at the bottom, so thatv when the two partsof the mold are closed` 5 u on the molten glassa dovetail of the samewill be retained in the cavity of the mold, the Aweb of the glassextending through the open- 4ingin the base ofthe same. The mold issushanger by means of the ,ar`m

i :ggxded from a c 3', and the two parts of themold kare pro- 'widedwithli'nks 34, which are pivotally connected with the parts of the moldandrralso with the head 35 of'the hydraulic or pneu- ,in'atic plunger49, w

the cylinder`36. This hanger is suspended by the cord 37, passing overthe'y sheaves 39, to a suitable hoisting and lowering-apparatus.`EXtendin from the cyiinder 36 is a guiderod 40, adapted-to slide insupports 41, secured to the frame 42, so that ,as Athe hanger freely upand down.

from the drawing-tank. 19 into the drawingbe brought directly over theslot 31 in the cover 22, and in orderto do this itis necesf sarycomplished by means of thepivoted housings 28 and 29, which housings areconnected one with the other by means of the threaded bar 43, whichpassesthrough .a pivoted nut ,44, xed inthe housing'28, and a nu't 45,which is adapted to be inserted in the pivotalcavity 46 in the housing29,'the housing being formed in two separable parts pivoted :to eachotlierand adapted to'close on the nut and to be secured aboutv the sameby means of the securing-pin which fits linv the eyes 47, so that whenit is'desired to bring the drawing-mold 32 ov r the longitudinal slot 31the in 47 is with rawn, allowing the two arts o the housing 29 to beseparated to re ease the nut '45, whereupon the two housings 5' and therollscarried thereby may be thrown ch is adapted totravel.

isy raised and-lowered the rod 40`-w=ill "move mold, it is necessarythat'th'emold or drawer to move the rolls 27. This is readily acapart,permitting the drawing-mold 32 to be brought -directly over and incontact with the sides of the lslot 31. In order-to till the,drawing-tank 19 with molten glass, fluid pressure is allowed to pass"through the conduit 12 into the upper por- 'tion of the,vdisplacement-chamber 2. The fluid-pressure upon the surface ofthe glassin the chamber 2 forces the glass from the chamber2 through the passa e8into the chambers 3 and 4 until the level o? the glass is above thelevel of the o ening ofthe assage 18, whereupon the mo ten glass by t eforce of gravity flows through the' passage 1 8 into the drawing-tank19, the gate 20 being open. When the drawing-tank 19 is filled, the gate20 is closed. At vthe samel time iiuidvpressure is shut off from thechamber 2 by movement of the valve-lever'14. In order to cause the glasstov pass from the drawing-tank 19 into Athe cavity of the mold 32,Huid-pressure is allowed lto pass through the passage 23 in the cover22, and .this fluid-pressure bearing on the surface of the glass in theside portions of the tank 19 causes the glass to rise in the centralortion of this tank between the wings 21, t rough the slot 31, and intothe cavity of the mold 32. VVh'en the cavit of the mold islled in thismanner, the mo d is raised by means, of the cord 37, drawing the sheetof glass with it from the tank 19. the mold 32 has been elevated abovethe level of lthe rolls 27' the housings 28 and 29 are brought together,and the space vbetween the rolls is regulated, by means of the threadedto the cylinder 36 below the plunger 49 through the valve 48, whichcauses the plunof glass therefrom.

In order to aid in drawing the glass from the tank 19,th,erolls 27 aredriven by means of the with sprockets driven by any suitable power.These rolls 27, where it is desired vto manu- .facture cathedral glassor figured glass, should -have their surfaces figured accordingly.. Inthe case of plain glass they-nsay be usedl to aid in drawing the glassfrom the tank andto form a smooth surface thereon. 'I do not,`'-how'ever, desirezto limit'myself to the use of these rolls, as'theymay drawn from the tank. solely from thefdrawing-mold 32. I havementioned that.' these rolls serve to regulate the thickness of theglass, and while'this is'true oi the glass is not dependent upon ltheuse of these rolls, as by regulating bar 43, toV the'required rthicknessofthe glass ger to ,rise and by means of the links 34 opensA the twoparts ofthe moldfreleasing the sheet sprocket-wheels 5U, which may beconnected the speed of thel As soon as yet the thickness y `the chamberda einem drawing-mold the diiierent thicknesses oi glass may be drawnthroH rh -slot Winch is of a standard Widthwthat is say, that byincreasing the rapidity oli the movement et the drawing-mold 32 to adegree greater than the rapidity of the iioiv of the glass through theslot 3 i. asheet ot thickness than the width oi" the Slot may beproduced.

.ln the `foregoing description ll have referred entirely tothe use ot myimproved furnace in connection with the drawing oi plate-glass. I donot, however, desire to limit my invention to the manufacture of this orany other kind of glassware, as the furnace may be used independently ofthe -drawing-chamber 19 and forthe purpose of delivering' the glass tomolds, gathering troughs, or piessiiigmolds, as may be desired. f

In Fig: 5 l show 'a modification in which the glass is delivered fromthe delivering-passage 18 into the mold or receptacle 51,plaeed directlybelow the orifice oi the passage. This mold v51 is shown as one of aseries Jl" molds mounted on vthe rotatory table 555', the molds beingbrought in succession directly beneath the spout' of the4 passage 18 bythe rotation of the table In Figs. 6, 7, and 8 Ishovv a modification inwhich the lglass instead oibeing displaced from the displacement-chamberinto the delivery-cha1nber by a downward pressure is driven from adelivery-chamber 53 into a rening-chamber 4a by means of a blast or jetof fluid-pressure passing from a conduit 5d through and over the surfaceof the molten glass in the chamber 5 3, driving' it from this chamberthrough a passage just below the surface oi the glass and leading intothe chamber a, vThie force of this blast causes a current oi moltenglass from the chamber 53 in the direction of the blast into and throughthe` chamber et into a chamber 55, from which it iiows by ilues 56 intoa gathen ing-trough 57, the displacement in this case being caused bythe blast playing on the surface of the molten instead oi i pressure ofthe air, as hei Iiobelore desc] iced. This3gathering-trough 5'?comn'iunicates by tluessimilar to the ilues :'56 with the delireery-chamber 53, so that the force ci" the blast from the jet-pipe 54causes a continuous flow of molten glass from the chamber 53 throughinto the chamber 55 and into the gathering-trough 57, 'from Which theglass can be returned to the deliver f-ehambeiwfi. As therefining-chamber da is kept heated by a suitable opening from themelting-chamber 3 the glass is kept at the right consistency. As thezgathering-trough 57 (shown in Fig. (i) is open theglass maybe itetheredtherefrom as desired in the usual manner. ity i'ilacinu a cover upon thegoth ering-ytroueh 57, as is shown in liig. which cover is provided witha slot lil .1 n tra. l.

l, said tanlf being' provided with Wings 21-, similar/tov the wings ill,already described, and with airL passages 23a, similarto the passages23,al ready described., plates of glass may bedrawn from the tank 57 inthe manner described in connection with the device shown in Figs. 1, 2,and 3. Ey means of this modification the glass in the tank 57, which,asalreadystated, maybe either an open gathering-tanker a closeddrawing-tank, is kept at all times at the proper heat and consistency. Agreat advantage incident to the use o this modiiication 4is-that an opengatheringtank may be had, in which the glassmay be kept at the requiredtemperature and consistency at all times without diiicult this beingsecured by the circulation of tllie glass from the delivery ormelting/chamber to the gathering tank and then. baci: afain to theheatingm chamber. Although l have'not shown any rollers in connectionwith this modification, such rollers may be used with o1' Without thedrawing device described in connection. with lillhere 'a thinsheet ofthroueh a marronr slot, uid-pressure alone may e used to raisethe glassto the slot, through which it is drawn by any suitable bait or drawingdevice. Owing to 4the construction and arrangementA of the heatingflues,the' glass as ing-tank or gathering-tank may be kept at all times at theproper consistency.

lNhere it is so desired, the Huid-pressure `valve 13 may beoperated.intermittently-` that is, ulsations oi iiuid-pressure may bedeliveredlto the chamber 2-causing a lar intermittent iiow of glass fromthe delivery chamber 4 through the assage 18.

Although i have describe the drawmgtank as adapted to draw a fiat plateor sheet ci giasal do not desire to limit shape.l f i l-.ilavinggjf thusdescribed my invention, whatr l claim, and desire to secure by LettersPatent, is z .y

l lin a glassfurnace, the combination of ameitingg-charnber or source ofsupply of Inolten glass, delivery-chamber tor delivering the moltenglass `tor further treatment, and huid-pressure devices for driving theglass from the meiting-chamber to the deliverych amber by the directaction of the iluid-pressure upon the molten glass; substantially asspecified.A

2. In a glass-iurnace`, the combination of a melting-chamber, atluid-pressure chamber, a refining or delivery chamber, said chambershaving communicating,y passages one with the other, a drawing-chamber,and a comminuit-atingr passage between the relining-ehamber and thedrawingchamber; substantially as speciiied.

3. in a 2riesenirnace, the combination ot' a source oi supply of moltenglass, a drawing or myself to this glass is to be drawn itis deliveredto the drawregugathering tanl situate on a level below the l evel of thesource of supply, a passage leadingto the drawing or gatiliering tank,from the source of-supply`, at a point above the normal level of theglass in said source of supply, and fluid-pressure devices for causing Ythe molten glass to rise to the level of the passage leading from thesource oi supply to the gathering-tank and to How through such passage;substantially as speciiied.

4. In a glass-furnace, the combination oi a melting-chamber, a refiningor delivery chamber, a fluid-pressure chamber having Y gealing ofthemolten glass in the tank; sub-l stantially as speci ed.

5. Ina glass-furnace, the combination of a source of sup ly of moltenglass,uidpres sure devices or driving the glass from the source ofsupply, a gathering or drawing tank,

a' passageconnecting `the source of suply a and the gathering lordrawing tank, an movable atefor closing the connection between saipassage and the drawing. or gathering chamber; substantially asspecified.

6. In a glass-furnace, the combination of a source of supply of moltenglass, a drawingsituate in said drawing-tanlr and dividing t ie y tankinto compartments, said compartments communicating with each other belowthe normal surface of the glass, a huid-pressure rpassage leading intoone oi said compartments, and a slot situate in thecover of another ofsaid compartments substantially as specied.

7. in a glass-furnace, the combination ofL a melting-tank, afluid-pressure chamber, de-V vices for applying fluid-pressure to themolten glass, said chambers communicating one with the other, a deliverpassao'e for the delivery Vof the molteng ass,` an a rece tacle situatebelow said passage; substantie ly as specified. j

8. In a lass-furnace, the combination "of a melting-c: amber, agathering-tank, a uidpressure chamber at one end of the gathermgl-tank,and a delivery-chamber at the ot er end of the gathering-tank, saidchainbers and tanks communicating with eachI other, and fluid-pressuredevices for causin thefcirculation of the molten glass throng saidchambers; substantially as specified.

In testimony whereof I have hereunto set my hand.

JULIUS PROEGER. Witnesses A. M. STEEN, WALTER FAMARiss;

